Hmmmm. . . Before reading, I wondered whether the decreased attendance was, as some have speculated, a desired result to enhance guest experience. Upon reading, nope - I was reminded about the dropping of Resident blackout dates to try to boost attendance, so the decline was not desired. And the article states they still missed analyst expectations, so apparently the price hikes were not intended to scare anyone away. It's hard to say whether price hikes caused any attendance drop, as many of the hikes are pretty new and lots of travelers plan their vacations much further out. I imagine quite a lot of people were kind of stuck with the increases at first because they felt locked into their plans already. I imagine there's a lag of a couple quarters to really assess the effects.
However, the article does somewhat refute the "it may not be good for the guests, but it's still good for the shareholder" argument. In the long run, what's good for the stockholder HAS to be good for the customer or something is wrong with your business plan.